狗主说第一段相似度很高,但是最后一段讲的是program和一些应用

P1:

讲以前认为月球很平坦，但是现在发现月球上有很多坑，然后说月球表面的什么土什么的对机器有损害，对人的肺也是。(后面有考题，问说如果不是宇航员上 月球而是用机器人，那么下面那个是正确的：基本确认，选择说如果机器人能够避免月球表面的对metal的腐蚀那么这个计划就是顺利的。总之是有个unless的选项，大概是C吧)

P2:

是讲到了APOLO阿波罗号带回来的什么样本，然后科学家只有simulate模拟这种月球的土质才能以后在月球上built观测点开发月球。(这里 有题，好象是infer题吧，大概是选科学家只有运用这种simulant(这词我不太懂，约摸是对土质的模拟的意思吧)才能够进行试验)。然后说现在能 够模拟出那些那些方面的regional 土质来了。一大堆细节，不重要。

P3: 不太重要。

Until the Apolloastronautsbrought lunar soil samples to Earth during 1969-72, the belief wasthat theMoon's dry, airless environment left the soil largely undisturbed.Reality ismuch harsher. A speck of Moon dirt. The strange shape tells a tale ofviolence:It results from the welding(焊接)of rock, mineral and glass by the heat of micrometeoroid impacts.Micrometeorites,many smaller than a pencil point, constantly rain onto thesurface at up to100,000 km/hr (about 62,000 mph), chipping off materials orforming microscopic(tiny)impact craters(坑). Somemeltthe soil and vaporize and re-condense as glassy coats on other specks ofdust. Impacts weld debris into"agglutinates.(attach)" Complicatedinteractions with the solarwind convert iron in the soil into myriads(mutiple)of "nano-phase(superhard material)" metallic iron grainsjust a fewnanometers wide. These processes form the "regolith" --Greek forstone blanket (litho + rhegos) -- covering the Moon's surface.

The Apollo specimens areAmerica'sCrown Jewels and are doled(施舍)out inultra-small samples toscientists who can demonstrate that nothing else will dofor high-valueexperiments. Renewed interest in lunar exploration in the late1980smeant that lunar simulants were needed to test schemes(计划) for building structures on the Moon or forextracting oxygen andother materials. That led to JSC-1 in 1993, madeof basaltic volcaniccinder conedeposits from a quarry near Flagstaff, AZ. The 25-ton lot --distributed in50-pound bags -- proved popular.

MSFC is developing threenewsimulants. Two will represent mare(thelarge dark areas on the Moon)and polarhighlands regions. A third will represent the glassy, sharp, jagged(锯齿状的) edges of regolith thattest the best of hardware(指器械) andhumans. But matching every location on the Moon would requirelarge numbers of small,unique, expensive batches.

"Instead, we willdeveloproot simulants and manufacture specific simulants from these, but alsoenableinvestigators to enhance the products as needed," McLemore added."Iliken this process to baking a cake: depending on the type of cake youwant, youneed certain ingredients for it to come out right and taste right.Getting therecipe right whether for a cake or lunar simulants iscritical." Forexample, the new mare simulant will be enriched withilmenite(a mineral), acrystalline iron-titanium oxide. Source materials used toproduce the threesimulants will potentially come from locations as diverse asMontana, Arizona,Virginia, Florida, Hawaii, and even some international sites.